Non-repeating clutch for die-presses.



-J. L. ALLEN.

NON-REPEATING CLUTCH FOR DIE PRESSES.

APPLIOATION FILED MAY 20, 1908.

Patented Nov. 3, 1908.

PALV

JOHN L. ALLEN, OF HASTINGS, MICHIGAN, ASSIGiiO'R TO GQN'SOLI D 'ATED PEEBS- AND TOOh COMPANY, OF HASTINGS, MICHIGAN, A 'CURWRATION OF MICHIGAN.

Nouns-rename satires. "r

5 Michigan, have invented new and useful-Tm,-

p-rovements in Non-Repeating Clutches for Die-Presses, of which the following is a specification, reference being bad to the accompanying drawings, forming a partthereof.

The purpose of this invention is to provide an improved device of the nature of a clutch and operating means for the same for connecting the fly wheel of a press with the opererating shaft thereof, whichshall prevent the press from performing more than one action,.

that is, prevent the shaft from making more than one complete revolutionafter bein tripped into engagement with the fly wheel without a repetition of the voluntary act of the operator for tripping it into engagement.

It consists of the elements and features of construction shown and described as indicated in the. claims.

Inthe. drawings :Figure. 1 is a front elevation of a portion of a die press, comprising the operating shaft, fly wheel and clutch device thereon, embodying this invention. Fig, 2

is a section at the line 2-2 on 1 showing the parts in their-normal positlon at rest.

Fig. 3 is an enlarged detail elevation of the parts shown in Fig. 2 pertaining to this invention, certain casings being-partly broken away to disclose the parts wit Fig. 4 is a detail section at theline 44 on Fig. 3..

shownat A in which is 'ournaled the press crank shaft, .B, having t e enlargement, B

loose for rotation, a dog, B, being provided for engaging the shaft. and wheel tooperate the press- It be understood; that the dog is mounted for sliding. relatively to.- the shaft to become engaged with-and disengaged y from thefly wheel, normally shot into Specification of Letters Patent.

Application flied m 20, 1908. Serial Nm assess;

stood t It may be understood that the drawings and on which the fly wheel, C, 1s mounted DEREfiEL newness Nov. 8, 1908'.-

engagement by the Fnroni spring, not. shown, I

being. forced out of engagement bythe trip ping cam, F. This. trippin cam-is pivoted on the bracket, G, mounte upon the. press standard, and isprovided with a spring-operated plunger, H, for holding it at the free-end normally up into the path of. the abutmenh,

D, on. the dog, D, so that the. rotation of the shaft causes the abutment to. runon to the tapering end of the tripping cam for wedlgling the dog out of engagement withthe fly w to brin thepress to rest.

hat in the usual. or ordinary. construction of such presses, the tri ping cam is conpulled down out of its sition for sto. ing the abutment, and that pp is released and allowed to be shot. into errgageinentv with the. fly wheel which communie cates rotation to the shaft. and maintains it as long as the. tripping cam is thus held down out. of the path of-the abutment, the engage.- ment of thefly wheel and shaft. being effected and the shaft being brought to rest 0111' qivhen the operator releases. the pedal and ows the tripping cam to be thrust back by It be under-' thisv action thedo'g the spring-pressed plunger, H, into the path of. the abutment, D.

The present invention consists of the features now to be described associated the tripping cam. for permitting it tobe forced ack into tripping position after the wheel completes one revolution, without re lease of the pedal. For this purpose}. the

'tri ping cam, F, is. connected with the pullro (which may be understood as extend.- ing to a pedal, not shown). by means of .a two-part link whosemembers, .M. and N,

- telescopewith each other, the u per member L, with the tripping cam, (such short link being pro- 1 M, beingconnected by a short vided merely to accommodate the movement of the tripping cam. about'its fulcrum to the sliding movement of the telescoping link,) and-the 1ower-member',.N, of the two- Ext link being connected with thefpull-rod, The two members, M and N, of telescoping link are engaged with each other by a dog, P, lodged inatransversely rojecting seat, N, provided on the.1ower m y thrustinto. engagement-with the notgh,

65 nected by a rod to the pe al by which it. is p esvvv M in the link member, M, by means of a spring, 0. The dog, P, has a projection,'p, which is engaged by a trigger, S, fulcrumed on the bracket, G, and extending up between said abutment, p, and the slide bear ing of the two telescoping link members upon scoping link whose two parts are locked to get er by thedog, P, to pull down the trip ping cam, the dog, D, engages the fly wheel and shaft in the usual manner and the shaft is rotated, but before the shaft has made one complete revolution, its abutment, 13*, encountering the trigger, S, causes the latter to pull out the dog, P, and disengage the two telescoping link members from each other, leaving the up er member, M, free to be ulled upward y the tripping cam which is forced upward by its s ringressed plun er,

and the tripping cam cin -t us returne trlpping position wedges member, N, withdrawn. ,sa

1 vator must release the pedal to let the link to the dog, D, out of engagement with the fly wheel, causing the press to come to rest, notwithstanding the operator may be still holding the pedal dcpressed and thereby keeping the lower link In order to cause the press to make another stroke, the opermember, N, return upward, and in order that it may be thus returned, notwithstanding it is disconnected from the cam, there is provided a spring-pressed plunger, T, operating upon the projecting seat, N of said lower hnk member for thrusting it upward. As"

soon as the lower link member is thus returned upward to bring the notch, M into line with the dog, P, the latter enters the notch and the two link members are again engaged, and the down-pull of the ull-rod when the pedal isnext depressed will withdraw the two-part link and the tripping cam connected therewith downward for permitting the engagement of the fly wheel and shaft by the dog, D.

In order that the trigger, S, may not in any case interfere with reversing the shaft, as is sometimes necessary 2 in 'manipulating the press, said tri ger is not positive y connected with the dog,%, which it is designed to operate, but is only arranged to operate it by encounter with the abutment, p, at one side thereof, being free to swing away from the abutment without operating the de or being restrained by it; and a s *ring, is provided on the trigger to ho d it yieldingly eoaees against the abutment, p, of the dog in order to position the trig er definitely as if the two parts were positive y connected.

I claim 1. In combination with a press shaft and fly wheel, a dog for engaging them; a springpressed cam for withdrawing the dog; a twopart link of which one link member is connected with the cam; pulling means connected with the other link member; a dog mounted on one of the link members for engaging the other to .lock them together; a trigger for withdrawing said dog and an abutment revolving with the shaft for encountering the trigger to withdraw the dog.

2. In combination with a ress shaft and fly wheel, a dog for engaging t em a springpressed tripping cam for withdrawing the dog; a two-part link whose members telescope with each other, one link member being connected with the trip ing cam; a pull-rod connected with the ot 161' link member; a dog mounted on the first mentioned link member, the second link member having a notch for engagement with the springpressed dog to lock the two members against I relative extension; a trigger for withdrawing the do and'an abutment revolving with the press shaft for encountering the trlgger, and a spring operating on the lower link member for yicldingly resisting the down pull of said member and returning it upward.

3. In combination with a press shaft and fly wheel and the dog for engaging then1,-a spring-pressed cam for withdrawing the dog a two-part link of which one link member 1s connected with the cam; ulling means connected with the other link member, and means by which the 'two members are disen ageably engaged for transmission of the u l on the latter member to the former, said link members being telescoped with each other.- i

4. In combination with a ress shaft, fly wheel and dog for engaging tliem; a springpressed cam -for withdrawing the dog; a twopart link of which one member is connected with the'cam; o crating means connected with the other ink member; a

dog mounted 'on one of the link members for engaging the other to lock them together; a trigger engaging the dog only in one direction for withdrawing it; a spring which resists the movement of the trigger in the opposite direction, and an abutment revolving with the shaft for encountering the trigger to withdraw the dog.

5. Incombination with a press shaft and fly-wheel, and the dog for engaging them, a spring-pressed cam for withdrawing the dog; a two-part link of which one link member is connected with the cam; ulling means connected with the other hnk: member, said members bein 'telescoped with each other, my hand, in the presence of two Witnesses, the inner (inem er ogirig nokilzched for engage at Hastings,Mich.,this 12th day of May, 1908. ment; a 0g oarrie y t e outer mem er for such engagement, and means operated by x JOHN E 5 the rotation'of the shaft for disengaging the In the presence of" 1 dog. GEO. E. COLEMAN,

In testimony whereof, I have hereunto set ARTHUR A. CROTHERS. 

